Brake unit for a bicycle



FIG. 1 is a right side view of a brake unit for a bicycle showing my new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a rear cross sectional view taken along line 7--7 in FIG. 1; and,

FIG. 8 is a rear view thereof showing a bicycle hub environment in which the brake unit is used, wherein the bicycle hub does not form a part of the design. 

The ornamental design for a brake unit for a bicycle, as shown and described. 